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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SYNC_SESSIONS_LOCAL_SESSION_EVENT_ROUTER_H_
#define COMPONENTS_SYNC_SESSIONS_LOCAL_SESSION_EVENT_ROUTER_H_
namespace sync_sessions {
class SyncedTabDelegate;
// An interface defining the ways in which local open tab events can interact
// with session sync. All local tab events flow to sync via this interface.
// In that way it is analogous to sync changes flowing to the local model
// via ProcessSyncChanges, just with a more granular breakdown.
class LocalSessionEventHandler {
public:
LocalSessionEventHandler(const LocalSessionEventHandler&) = delete;
LocalSessionEventHandler& operator=(const LocalSessionEventHandler&) = delete;
virtual ~LocalSessionEventHandler() = default;
// Called when asynchronous session restore has completed. On Android, this
// can be called multiple times (e.g. transition from a CCT without tabbed
// window to actually starting a tabbed activity).
virtual void OnSessionRestoreComplete() = 0;
// A local navigation event took place that affects the synced session
// for this instance of Chrome.
virtual void OnLocalTabModified(SyncedTabDelegate* modified_tab) = 0;
// A local tab was closed. It's the job of the LocalSessionEventHandler to
// figure out which tab this is and to react accordingly.
virtual void OnLocalTabClosed() = 0;
protected:
LocalSessionEventHandler() = default;
};
// The LocalSessionEventRouter is responsible for hooking itself up to various
// notification sources in the browser process and forwarding relevant
// events to a handler as defined in the LocalSessionEventHandler contract.
class LocalSessionEventRouter {
public:
LocalSessionEventRouter(const LocalSessionEventRouter&) = delete;
LocalSessionEventRouter& operator=(const LocalSessionEventRouter&) = delete;
virtual ~LocalSessionEventRouter() = default;
virtual void StartRoutingTo(LocalSessionEventHandler* handler) = 0;
virtual void Stop() = 0;
protected:
LocalSessionEventRouter() = default;
};
} // namespace sync_sessions
#endif // COMPONENTS_SYNC_SESSIONS_LOCAL_SESSION_EVENT_ROUTER_H_
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